不同球磨时间铁掺杂TiO2粉的物相组成和磁性
Phase Composition and Magnetic Properties of Fe-Doped TiO2 Powders With Different Milling Times
摘 要
利用高能球磨法球磨不同时间得到不同铁掺杂量的TiO2粉, 并利用电感耦合等离子发射光谱仪、X射线衍射仪、拉曼光谱仪和振动样品磁强计对粉体的物相组成和磁性能进行了分析。结果表明: 球磨不仅使铁固溶进入TiO2晶格中, 还诱发了TiO2从锐钛矿相向S相和金红石相的转变, 粉体中未发现铁及铁的氧化物; 所有粉体都表现出室温铁磁性, 球磨3 h后磁性最大, 随着球磨时间的延长, 饱和磁化强度逐渐减小; 铁掺杂金红石相的磁性大于掺杂锐钛矿相的, 而铁掺杂相S的磁性能又远远大于掺杂进入前两相的。
高能球磨
铁掺杂TiO2
磁性能
diluted magnetic semiconductor
high energy ball milling
Fe-doped TiO2
magnetic property
Abstract
The TiO2 powders with different Fe-doped amounts were prepared by high energy ball milling for different times. The phase composition and magnetic properties of the powders were analyzed by using inductively coupled plasma atomic emission spectrometry, X-ray diffractometer, Raman scattering spectrometer and vibrating sample magnetometer. The results show that milling not only triggered the solid solution of Fe in TiO2 lattice, but also induced the phase transformation from anatase phase to S and rutile phase in TiO2. The Fe and Fe oxides were not found in the powders. All of the powders exhibited room-temperature ferromagnetism. The magnetism reached the maximum at the milling time of 3 h, and the saturation magnetization decreased with the increasing of milling time. Fe-doped rutile phase had greater magnetism than the Fe-doped anatase phase, while the Fe-doped S phase had the greatest magnetism.
中图分类号 O482.5 O657.37
所属栏目
基金项目 国家自然科学基金资助项目(50471045, 10804071); 上海高校选拔培养优秀青年教师科研专项基金资助项目(sdj08014)
收稿日期 2010/5/17
修改稿日期 2011/3/4
网络出版日期
作者单位点击查看
备注林璠(1980-), 女, 浙江瑞安人, 讲师, 博士。
引用该论文: LIN Fan,JIANG Dong-mei,MA Xue-ming. Phase Composition and Magnetic Properties of Fe-Doped TiO2 Powders With Different Milling Times[J]. Materials for mechancial engineering, 2011, 35(5): 14～18
林璠,蒋冬梅,马学鸣. 不同球磨时间铁掺杂TiO2粉的物相组成和磁性[J]. 机械工程材料, 2011, 35(5): 14～18
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【6】LEE H M, KIM C S. Effects of oxygen vacancies on the ferromagnetism in Fe-doped anatase TiO2[J].Journal of Magnetism and Magnetic Materials, 2007, 310:2099-2101.
【7】LIN F, JIANG D M, LIN Y, et al. Magnetism of Fe-doped TiO2 milled in different milling atmospheres[J].Physica B, 2008, 403:2193-2196.
【8】WANG Z J, WANG W D, TANG J K, et al. Extraordinary hall effect and ferromagnetism in Fe-doped reduced rutile[J].Applied Physics Letters, 2003, 83:518-520.
【9】PAN X Y, CHEN Y, MA X M, et al. Phase transformation of nanocrystalline anatase powders induced by mechanical activation[J].Journal of American Ceramic Society, 2004, 87:1164-1166.
【10】CABRERA A F, RODRIGUEZ TORRES C E, ERRICO L, et al. Study of Fe-doped rutile TiO2 alloys obtained by mechanical alloying[J].Physica B, 2006, 384:345-347.
【11】LIN Y, JIANG D M, LIN F, et al. Fe-doped ZnO magnetic semiconductor by mechanical alloying[J].Journal of Alloys and Compounds, 2007, 436:30-33.
【12】WANG X H, LI J G, KAMIYAMA H, et al. Pyrogenic iron-doped TiO2 nanopowders synthesized in RF thermal plasma: phase formation, defect structure, band gap, and magnetic properties[J].Journal of American Ceramic Society, 2005, 127:10982-10990.
【13】LI J G, KAMIYAMA H, WANG X H, et al. TiO2 nano-powders via radio-frequency thermal plasma oxidation of organic liquid precursors: synthesis and characterization[J].Journal of the European Ceramic Society, 2006, 26:423-428.
【14】ALEXANDRESCU R, MORJAN I, SCARISOREANU M, et al. Structural investigations on TiO2 and Fe-doped TiO2 nano-particles synthesized by laser pyrolysis[J].Thin Solid Film, 2007, 515:8438-8455.
【15】COEY J M D, VENKATESAN M, FIZGERALD C B. Donor impurity band exchange in dilute ferromagnetic oxides[J].Nature Materials, 2005, 4:173-179.
【16】ARLT T, BERMEJO M, BLANCO M A, et al. High-pressure polymorphs of anatase TiO2[J].Physical Review B, 2000, 61:14414-14419.
【17】LU G X, XU K, LI S B. Alteration of the catalytic properties of anatase by shock-wave loading[J].Materials Letter, 1994, 21:251-253.
【18】CHAUDHURI J, RAM M L, SARKAR B K. Observation of a high pressure polymorph of titania by vibrational ball milling[J].Journal of Materials Science, 1994, 29:3484-3488.
【19】GENNARI F C, PASQUEVICH D M. Enhancing effect of iron chlorides on the anatase-rutile transition in titanium dioxide[J].Journal of American Ceramic Society, 1999, 82:1915-1921.
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